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Definition of berkelium noun from the Oxford Advanced Learner's Dictionary

berkelium

noun
 
/bɜːˈkiːliəm/,
 
/ˈbɜːkliəm/
 
/ˈbɜːrkliəm/
[uncountable]
(symbol Bk)
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  1. a chemical element. Berkelium is a radioactive metal that is produced artificially from americium and helium.
    Word Origin1949: from Berkeley, a city in western California, USA (where it was first made) + -ium.
See berkelium in the Oxford Advanced American Dictionary
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trait
noun
 
 
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